| 摘要 |
PROBLEM TO BE SOLVED: To provide an inexpensive sealed contact material having a long contact service life even under a highly loaded conditions. SOLUTION: This material is the one in which a coating layer having >=0.1μm thickness is formed on a contact base material, and this coating layer has a compsn. contg. at least one element among Zn, Cd, In, Tl, Sn, Pb, As, Sb and Bi by 0.5 to 50at%, contg. at least one element of C and Si by 5 to 50at%, contg. 0 to 40at% O (oxygen), and the balance >=30at% Cu or Ag. Since the material contains adhesion reducing elements such as Zn, Cd, In, Tl, Sn, Pb, As, Sb, Bi or the like and furthermore contains arc damage dispersing elements of C or Si, adhesion does not occur between contacts even under high loads in which arc discharge is generated, and a good contact service life can be obtd. Moreover, it is inexpensive since expensive Rh, Ru, etc., are not used.
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